Apparatus for producing a round or relief effect by photography.



Draflsma TQM H. B. BYRON.

APPARATUS run PRODUCING A ROUND on RELIEF'EFFECT BY PHOTOGRAPHY.

APPLICATION FILED FEB-15. 1912.

Patented Sept. 21, 1915.

I talisman UNITED STATES PATENT OFFICE.

HAGAB BOLTON BYRON, OF CHICAGO, ILLINOIS, ASSIGNOB, BY MESNEASSIGNMENTS, OF ONE-THIRD TO A. H. ADAMS, ADA E. PICKABD, AND J. L.JACKSON, OF CHICAGO,

ILLINOIS.

APPARATUS FOR PRODUCING A ROUND OR BELIEF EFFECT BY PHOTOGRAPHY.

Application filed February 16, 1912.

To all lU/lO/fb it may concern:

Be it known that I, HAGAR BOLTON BYRON, a citizen of the United States,residing at Chicago. in the county of Cook and State of Illinois, haveinvented a new and Improved Apparatus for Producing a Round or ReliefEffect by Photography, of which the following is a specification,reference being had to the accompanying drawings.

My invention relates to photography, and

as for its object to provide an improved apparatus for producing aphotographic image of the object photographed, which will presentsubstantially the same relief effect as is presented by the object tothe eye in contradistinction to the ordinary fiat image heretoforeobtained. I accomplish this object as illustrated in the drawings and ashereinafter described.

IVhat I regard as new is set forth in the claims.

In the accompanying drawings,Figure 1 is a horizontal sectional view ofmy improved apparatus; Fig. 2 is a front view; and Fig. 3 is a similarview showing a modification.

My improved apparatus comprises the combination or association with aphotographic objective of any suitable type of a plus system of lensesby which the area of the image is reduced to the desired size, theobjective being of considerably greater diameter than the size of thedesired image, so that the image is formed principally by the rays whichcorrespond to those that give rise to normal or binocular human vision.After passing through the objective, the rays unite at the focal plane,forming a single image in the focal plane of the system. This image isbinocular or third dimensional in aspect, because it is constitutedlargely, if not altogether, by rays from two different angles of theobject photographed, such angles approximating the angles of sightbetween normal eyes in human vision. In order to intensify or increasethis binocular efi'ect, a ray intercepter, such as an opaque screen ordisk, may be placed between the object to be photographed and theobjective, and centrally of the latter, so as to completely intercept orcut out the central or monocular rays that would otherwise pass throughthe lens, thus Specification of Letters Patent.

.by which it is formed.

Patented Sept. 21, 1915.

Serial No. 677,933.

permitting the resulting image to be formed wholly by the rays of lightthat pass through the lateral or peripheral zones of the objective. Thisscreen or intercepter may extend entirely across the lens, or it may bein the form of a disk disposed centrally of the objective.

Referring to the drawings,ab indicate two compound achromatic lenses,such as are commonly employed in a. photographic objective, said lensesbeing mounted in a suitable tubular support 0 in any suitable way.

03 indicates the monocular ray intercepter. which, in the constructionshown in Figs. 1 and 2, is in the form of a band extending centrallyacross the outer face of the lens a so as to lie between the objectiveand the object to be photographed, leaving two lateral portions of thelens exposed at opposite sides thereof. In the construction shown inFig. 3, the intercepter is in the form of a disk d, which may be of anysuitable opaque material and may be secured to the lens a in anysuitable way, such as by pasting it thereupon. v In the latterconstruction the entire marginal portion of the lens a is exposed. Asillustrated diagrammatically in Fig. 1, in which-the arrow 6 indicatesthe object to be photographed, the axial rays are cut off, the effectiverays being those which strike the side or marginal portions of theobjective, as the case may be.

In connection with the lenses a-b I provide a plus system of lensescomprising one or more plano-convex compound lenses for reducing theimage to the desired size. In the drawings I have shown three of suchlenses. marked, respectively. f, g, 71., mounted in cylinders f, g, h,respectively. The cylinder 7' is arranged to screw into the cylinder ortube 0, and the cylinders g'h are similarly fitted together, so thatthey may be readily removed. The small arrow i at the left in Fig. 1illustrates the image, the dotted lines representing the light rays Asclearly indicated by the diagram, this image is perfectly homogeneousand is composed onlj of the binocular rays coming from the object,-therefractive power of the plus lens system uniting the separate right andleft bundles of rays and condensing them into the single perfect image.By thus combining a system of plus lenses with an objective ofrelatively large diameter as compared with the size of the image formedin the focal plane, the size of the image is greatly reduced relative tothe size of the aperture of the objective so that the image formedcontains a highly accentuated relief quality,

whether used in ordinary photography or projected kinetographically,giving to the resulting picture a roundness not heretofore obtainable.and corresponding in its relief and spatial aspect to the sensation ofactual. binocular vision. If desirable, the objec-: tive may beconstructed as a complete unit,: the several parts being so arranged asto be:

non-separable, or the separate lenses may be made removable asillustrated in thedrawings. or in any other suitable way.

That which I claim as my invention, and desire to secure by LettersPatent, is,-

An objective, comprising two compound achromatic lenses. one or morepiano-convex compound lenses for reducing the image to the desired size;and a ray intercepter associated with one of said achromatic lenses.

HAGAR BOLTON BYRON.

Witnesses JOHN L. JACKSON, MINXIE A. HUNTER.

Copies 0! this patent may be obtained for five cent: each. by addressingthe Commissioner of Patents, Washington. D. 0.

